Crossrail C405 Paddington Station

The Crossrail Paddington Station will take the form of an underground box measuring 260m long, 25m wide and 23m deep, and located directly under the Departures Road and Eastbourne Terrace.

Costain/Skanska JV appointed Kilnbridge as a specialist subcontractor to reduce the levels of the Station Diaphragm walls using specialist techniques. The North Diaphragm wall utilised diamond drilling and bursting techniques and the South Diaphragm wall utilised plunge wire sawing, wire sawing and track sawing. This is the largest plunge wire sawing contract undertaken worldwide to date (370m²).

Crossrail C405 Paddington Station Underground

Key Facts

Location:
Paddington, London
Contractor:Costain/Skanska JV
Client:Crossrail
Value:£1.8m

The South D-wall had to be completed in 2 phases using only diamond wire cutting techniques.

The initial phase involved pre-cutting the 1.20m wide D-wall into sections varying in weight from 1.80t to 8.50t.

The second phase involved the removal of 268 l/m of cut D-wall sections and a reinforced concrete guide wall up to 1.50m thick.

Total approximate weight of concrete removed was 1650t cut into 370 sections requiring 70 lorry movements. 1480 resin anchors were installed and 100% tested to lift out the concrete sections.

Crossrail C405 Paddington Station